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Finding the Fourth Proportional to 138,808.94, 208,125.93 and 117,756.37

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Solution

The fourth proportional to 138,808.94, 208,125.93 and 117,756.37 is: 176,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,808.94 : 208,125.93 = 117,756.37 : x
  2. Step 2: Convert to fraction form
    138,808.94/208,125.93 = 117,756.37/x
  3. Step 3: Cross multiply
    138,808.94x = 208,125.93 × 117,756.37
  4. Step 4: Simplify right side
    138,808.94x = 24,508,154,019.67
  5. Step 5: Solve for x
    x = 24,508,154,019.67/138,808.94
  6. Step 6: Final answer
    x = 176,560.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.